source: trunk-3.0/source/nsswitch/winbindd_ads.c@ 102

Last change on this file since 102 was 39, checked in by Paul Smedley, 18 years ago

Upgrade source to 3.0.25a
File size: 28.8 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3
4 Winbind ADS backend functions
5
6 Copyright (C) Andrew Tridgell 2001
7 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003
8 Copyright (C) Gerald (Jerry) Carter 2004
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23*/
24
25#include "includes.h"
26#include "winbindd.h"
27
28#ifdef HAVE_ADS
29
30#undef DBGC_CLASS
31#define DBGC_CLASS DBGC_WINBIND
32
33extern struct winbindd_methods reconnect_methods;
34
35/*
36 return our ads connections structure for a domain. We keep the connection
37 open to make things faster
38*/
39static ADS_STRUCT *ads_cached_connection(struct winbindd_domain *domain)
40{
41 ADS_STRUCT *ads;
42 ADS_STATUS status;
43 fstring dc_name;
44 struct in_addr dc_ip;
45
46 DEBUG(10,("ads_cached_connection\n"));
47
48 if (domain->private_data) {
49
50 time_t expire;
51 time_t now = time(NULL);
52
53 /* check for a valid structure */
54 ads = (ADS_STRUCT *)domain->private_data;
55
56 expire = MIN(ads->auth.tgt_expire, ads->auth.tgs_expire);
57
58 DEBUG(7, ("Current tickets expire in %d seconds (at %d, time is now %d)\n",
59 (uint32)expire-(uint32)now, (uint32) expire, (uint32) now));
60
61 if ( ads->config.realm && (expire > now)) {
62 return ads;
63 } else {
64 /* we own this ADS_STRUCT so make sure it goes away */
65 DEBUG(7,("Deleting expired krb5 credential cache\n"));
66 ads->is_mine = True;
67 ads_destroy( &ads );
68 ads_kdestroy("MEMORY:winbind_ccache");
69 domain->private_data = NULL;
70 }
71 }
72
73 /* we don't want this to affect the users ccache */
74 setenv("KRB5CCNAME", "MEMORY:winbind_ccache", 1);
75
76 ads = ads_init(domain->alt_name, domain->name, NULL);
77 if (!ads) {
78 DEBUG(1,("ads_init for domain %s failed\n", domain->name));
79 return NULL;
80 }
81
82 /* the machine acct password might have change - fetch it every time */
83
84 SAFE_FREE(ads->auth.password);
85 SAFE_FREE(ads->auth.realm);
86
87 if ( IS_DC ) {
88 DOM_SID sid;
89 time_t last_set_time;
90
91 if ( !secrets_fetch_trusted_domain_password( domain->name, &ads->auth.password, &sid, &last_set_time ) ) {
92 ads_destroy( &ads );
93 return NULL;
94 }
95 ads->auth.realm = SMB_STRDUP( ads->server.realm );
96 strupper_m( ads->auth.realm );
97 }
98 else {
99 struct winbindd_domain *our_domain = domain;
100
101 ads->auth.password = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
102
103 /* always give preference to the alt_name in our
104 primary domain if possible */
105
106 if ( !domain->primary )
107 our_domain = find_our_domain();
108
109 if ( our_domain->alt_name[0] != '\0' ) {
110 ads->auth.realm = SMB_STRDUP( our_domain->alt_name );
111 strupper_m( ads->auth.realm );
112 }
113 else
114 ads->auth.realm = SMB_STRDUP( lp_realm() );
115 }
116
117 ads->auth.renewable = WINBINDD_PAM_AUTH_KRB5_RENEW_TIME;
118
119 /* Setup the server affinity cache. We don't reaally care
120 about the name. Just setup affinity and the KRB5_CONFIG
121 file. */
122
123 get_dc_name( ads->server.workgroup, ads->server.realm, dc_name, &dc_ip );
124
125 status = ads_connect(ads);
126 if (!ADS_ERR_OK(status) || !ads->config.realm) {
127 DEBUG(1,("ads_connect for domain %s failed: %s\n",
128 domain->name, ads_errstr(status)));
129 ads_destroy(&ads);
130
131 /* if we get ECONNREFUSED then it might be a NT4
132 server, fall back to MSRPC */
133 if (status.error_type == ENUM_ADS_ERROR_SYSTEM &&
134 status.err.rc == ECONNREFUSED) {
135 /* 'reconnect_methods' is the MS-RPC backend. */
136 DEBUG(1,("Trying MSRPC methods\n"));
137 domain->backend = &reconnect_methods;
138 }
139 return NULL;
140 }
141
142 /* set the flag that says we don't own the memory even
143 though we do so that ads_destroy() won't destroy the
144 structure we pass back by reference */
145
146 ads->is_mine = False;
147
148 domain->private_data = (void *)ads;
149 return ads;
150}
151
152
153/* Query display info for a realm. This is the basic user list fn */
154static NTSTATUS query_user_list(struct winbindd_domain *domain,
155 TALLOC_CTX *mem_ctx,
156 uint32 *num_entries,
157 WINBIND_USERINFO **info)
158{
159 ADS_STRUCT *ads = NULL;
160 const char *attrs[] = { "*", NULL };
161 int i, count;
162 ADS_STATUS rc;
163 LDAPMessage *res = NULL;
164 LDAPMessage *msg = NULL;
165 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
166
167 *num_entries = 0;
168
169 DEBUG(3,("ads: query_user_list\n"));
170
171 ads = ads_cached_connection(domain);
172
173 if (!ads) {
174 domain->last_status = NT_STATUS_SERVER_DISABLED;
175 goto done;
176 }
177
178 rc = ads_search_retry(ads, &res, "(objectCategory=user)", attrs);
179 if (!ADS_ERR_OK(rc) || !res) {
180 DEBUG(1,("query_user_list ads_search: %s\n", ads_errstr(rc)));
181 goto done;
182 }
183
184 count = ads_count_replies(ads, res);
185 if (count == 0) {
186 DEBUG(1,("query_user_list: No users found\n"));
187 goto done;
188 }
189
190 (*info) = TALLOC_ZERO_ARRAY(mem_ctx, WINBIND_USERINFO, count);
191 if (!*info) {
192 status = NT_STATUS_NO_MEMORY;
193 goto done;
194 }
195
196 i = 0;
197
198 for (msg = ads_first_entry(ads, res); msg; msg = ads_next_entry(ads, msg)) {
199 char *name, *gecos = NULL;
200 char *homedir = NULL;
201 char *shell = NULL;
202 uint32 group;
203 uint32 atype;
204 DOM_SID user_sid;
205 gid_t primary_gid = (gid_t)-1;
206
207 if (!ads_pull_uint32(ads, msg, "sAMAccountType", &atype) ||
208 ads_atype_map(atype) != SID_NAME_USER) {
209 DEBUG(1,("Not a user account? atype=0x%x\n", atype));
210 continue;
211 }
212
213 name = ads_pull_username(ads, mem_ctx, msg);
214
215 if ( ads_pull_sid( ads, msg, "objectSid", &user_sid ) ) {
216 status = nss_get_info( domain->name, &user_sid, mem_ctx,
217 ads, msg, &homedir, &shell, &gecos,
218 &primary_gid );
219 }
220
221 if (gecos == NULL) {
222 gecos = ads_pull_string(ads, mem_ctx, msg, "name");
223 }
224
225 if (!ads_pull_sid(ads, msg, "objectSid",
226 &(*info)[i].user_sid)) {
227 DEBUG(1,("No sid for %s !?\n", name));
228 continue;
229 }
230 if (!ads_pull_uint32(ads, msg, "primaryGroupID", &group)) {
231 DEBUG(1,("No primary group for %s !?\n", name));
232 continue;
233 }
234
235 (*info)[i].acct_name = name;
236 (*info)[i].full_name = gecos;
237 (*info)[i].homedir = homedir;
238 (*info)[i].shell = shell;
239 (*info)[i].primary_gid = primary_gid;
240 sid_compose(&(*info)[i].group_sid, &domain->sid, group);
241 i++;
242 }
243
244 (*num_entries) = i;
245 status = NT_STATUS_OK;
246
247 DEBUG(3,("ads query_user_list gave %d entries\n", (*num_entries)));
248
249done:
250 if (res)
251 ads_msgfree(ads, res);
252
253 return status;
254}
255
256/* list all domain groups */
257static NTSTATUS enum_dom_groups(struct winbindd_domain *domain,
258 TALLOC_CTX *mem_ctx,
259 uint32 *num_entries,
260 struct acct_info **info)
261{
262 ADS_STRUCT *ads = NULL;
263 const char *attrs[] = {"userPrincipalName", "sAMAccountName",
264 "name", "objectSid", NULL};
265 int i, count;
266 ADS_STATUS rc;
267 LDAPMessage *res = NULL;
268 LDAPMessage *msg = NULL;
269 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
270 const char *filter;
271 BOOL enum_dom_local_groups = False;
272
273 *num_entries = 0;
274
275 DEBUG(3,("ads: enum_dom_groups\n"));
276
277 /* only grab domain local groups for our domain */
278 if ( domain->native_mode && strequal(lp_realm(), domain->alt_name) ) {
279 enum_dom_local_groups = True;
280 }
281
282 /* Workaround ADS LDAP bug present in MS W2K3 SP0 and W2K SP4 w/o
283 * rollup-fixes:
284 *
285 * According to Section 5.1(4) of RFC 2251 if a value of a type is it's
286 * default value, it MUST be absent. In case of extensible matching the
287 * "dnattr" boolean defaults to FALSE and so it must be only be present
288 * when set to TRUE.
289 *
290 * When it is set to FALSE and the OpenLDAP lib (correctly) encodes a
291 * filter using bitwise matching rule then the buggy AD fails to decode
292 * the extensible match. As a workaround set it to TRUE and thereby add
293 * the dnAttributes "dn" field to cope with those older AD versions.
294 * It should not harm and won't put any additional load on the AD since
295 * none of the dn components have a bitmask-attribute.
296 *
297 * Thanks to Ralf Haferkamp for input and testing - Guenther */
298
299 filter = talloc_asprintf(mem_ctx, "(&(objectCategory=group)(&(groupType:dn:%s:=%d)(!(groupType:dn:%s:=%d))))",
300 ADS_LDAP_MATCHING_RULE_BIT_AND, GROUP_TYPE_SECURITY_ENABLED,
301 ADS_LDAP_MATCHING_RULE_BIT_AND,
302 enum_dom_local_groups ? GROUP_TYPE_BUILTIN_LOCAL_GROUP : GROUP_TYPE_RESOURCE_GROUP);
303
304 if (filter == NULL) {
305 status = NT_STATUS_NO_MEMORY;
306 goto done;
307 }
308
309 ads = ads_cached_connection(domain);
310
311 if (!ads) {
312 domain->last_status = NT_STATUS_SERVER_DISABLED;
313 goto done;
314 }
315
316 rc = ads_search_retry(ads, &res, filter, attrs);
317 if (!ADS_ERR_OK(rc) || !res) {
318 DEBUG(1,("enum_dom_groups ads_search: %s\n", ads_errstr(rc)));
319 goto done;
320 }
321
322 count = ads_count_replies(ads, res);
323 if (count == 0) {
324 DEBUG(1,("enum_dom_groups: No groups found\n"));
325 goto done;
326 }
327
328 (*info) = TALLOC_ZERO_ARRAY(mem_ctx, struct acct_info, count);
329 if (!*info) {
330 status = NT_STATUS_NO_MEMORY;
331 goto done;
332 }
333
334 i = 0;
335
336 for (msg = ads_first_entry(ads, res); msg; msg = ads_next_entry(ads, msg)) {
337 char *name, *gecos;
338 DOM_SID sid;
339 uint32 rid;
340
341 name = ads_pull_username(ads, mem_ctx, msg);
342 gecos = ads_pull_string(ads, mem_ctx, msg, "name");
343 if (!ads_pull_sid(ads, msg, "objectSid", &sid)) {
344 DEBUG(1,("No sid for %s !?\n", name));
345 continue;
346 }
347
348 if (!sid_peek_check_rid(&domain->sid, &sid, &rid)) {
349 DEBUG(1,("No rid for %s !?\n", name));
350 continue;
351 }
352
353 fstrcpy((*info)[i].acct_name, name);
354 fstrcpy((*info)[i].acct_desc, gecos);
355 (*info)[i].rid = rid;
356 i++;
357 }
358
359 (*num_entries) = i;
360
361 status = NT_STATUS_OK;
362
363 DEBUG(3,("ads enum_dom_groups gave %d entries\n", (*num_entries)));
364
365done:
366 if (res)
367 ads_msgfree(ads, res);
368
369 return status;
370}
371
372/* list all domain local groups */
373static NTSTATUS enum_local_groups(struct winbindd_domain *domain,
374 TALLOC_CTX *mem_ctx,
375 uint32 *num_entries,
376 struct acct_info **info)
377{
378 /*
379 * This is a stub function only as we returned the domain
380 * local groups in enum_dom_groups() if the domain->native field
381 * was true. This is a simple performance optimization when
382 * using LDAP.
383 *
384 * if we ever need to enumerate domain local groups separately,
385 * then this the optimization in enum_dom_groups() will need
386 * to be split out
387 */
388 *num_entries = 0;
389
390 return NT_STATUS_OK;
391}
392
393/* convert a DN to a name, SID and name type
394 this might become a major speed bottleneck if groups have
395 lots of users, in which case we could cache the results
396*/
397static BOOL dn_lookup(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx,
398 const char *dn,
399 char **name, uint32 *name_type, DOM_SID *sid)
400{
401 LDAPMessage *res = NULL;
402 const char *attrs[] = {"userPrincipalName", "sAMAccountName",
403 "objectSid", "sAMAccountType", NULL};
404 ADS_STATUS rc;
405 uint32 atype;
406 DEBUG(3,("ads: dn_lookup\n"));
407
408 rc = ads_search_retry_dn(ads, &res, dn, attrs);
409
410 if (!ADS_ERR_OK(rc) || !res) {
411 goto failed;
412 }
413
414 (*name) = ads_pull_username(ads, mem_ctx, res);
415
416 if (!ads_pull_uint32(ads, res, "sAMAccountType", &atype)) {
417 goto failed;
418 }
419 (*name_type) = ads_atype_map(atype);
420
421 if (!ads_pull_sid(ads, res, "objectSid", sid)) {
422 goto failed;
423 }
424
425 if (res)
426 ads_msgfree(ads, res);
427
428 return True;
429
430failed:
431 if (res)
432 ads_msgfree(ads, res);
433
434 return False;
435}
436
437/* Lookup user information from a rid */
438static NTSTATUS query_user(struct winbindd_domain *domain,
439 TALLOC_CTX *mem_ctx,
440 const DOM_SID *sid,
441 WINBIND_USERINFO *info)
442{
443 ADS_STRUCT *ads = NULL;
444 const char *attrs[] = { "*", NULL };
445 ADS_STATUS rc;
446 int count;
447 LDAPMessage *msg = NULL;
448 char *ldap_exp;
449 char *sidstr;
450 uint32 group_rid;
451 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
452
453 DEBUG(3,("ads: query_user\n"));
454
455 if ( (ads = ads_cached_connection(domain)) == NULL ) {
456 domain->last_status = NT_STATUS_SERVER_DISABLED;
457 goto done;
458 }
459
460 sidstr = sid_binstring(sid);
461 asprintf(&ldap_exp, "(objectSid=%s)", sidstr);
462 rc = ads_search_retry(ads, &msg, ldap_exp, attrs);
463 free(ldap_exp);
464 free(sidstr);
465 if (!ADS_ERR_OK(rc) || !msg) {
466 DEBUG(1,("query_user(sid=%s) ads_search: %s\n",
467 sid_string_static(sid), ads_errstr(rc)));
468 goto done;
469 }
470
471 count = ads_count_replies(ads, msg);
472 if (count != 1) {
473 DEBUG(1,("query_user(sid=%s): Not found\n",
474 sid_string_static(sid)));
475 goto done;
476 }
477
478 info->acct_name = ads_pull_username(ads, mem_ctx, msg);
479
480 info->primary_gid = (gid_t)-1;
481 nss_get_info( domain->name, sid, mem_ctx, ads, msg,
482 &info->homedir, &info->shell, &info->full_name, &info->primary_gid );
483
484 if (info->full_name == NULL) {
485 info->full_name = ads_pull_string(ads, mem_ctx, msg, "name");
486 }
487
488 if (!ads_pull_uint32(ads, msg, "primaryGroupID", &group_rid)) {
489 DEBUG(1,("No primary group for %s !?\n",
490 sid_string_static(sid)));
491 goto done;
492 }
493
494 sid_copy(&info->user_sid, sid);
495 sid_compose(&info->group_sid, &domain->sid, group_rid);
496
497 status = NT_STATUS_OK;
498
499 DEBUG(3,("ads query_user gave %s\n", info->acct_name));
500done:
501 if (msg)
502 ads_msgfree(ads, msg);
503
504 return status;
505}
506
507/* Lookup groups a user is a member of - alternate method, for when
508 tokenGroups are not available. */
509static NTSTATUS lookup_usergroups_member(struct winbindd_domain *domain,
510 TALLOC_CTX *mem_ctx,
511 const char *user_dn,
512 DOM_SID *primary_group,
513 size_t *p_num_groups, DOM_SID **user_sids)
514{
515 ADS_STATUS rc;
516 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
517 int count;
518 LDAPMessage *res = NULL;
519 LDAPMessage *msg = NULL;
520 char *ldap_exp;
521 ADS_STRUCT *ads;
522 const char *group_attrs[] = {"objectSid", NULL};
523 char *escaped_dn;
524 size_t num_groups = 0;
525
526 DEBUG(3,("ads: lookup_usergroups_member\n"));
527
528 ads = ads_cached_connection(domain);
529
530 if (!ads) {
531 domain->last_status = NT_STATUS_SERVER_DISABLED;
532 goto done;
533 }
534
535 if (!(escaped_dn = escape_ldap_string_alloc(user_dn))) {
536 status = NT_STATUS_NO_MEMORY;
537 goto done;
538 }
539
540 if (!(ldap_exp = talloc_asprintf(mem_ctx, "(&(member=%s)(objectCategory=group))", escaped_dn))) {
541 DEBUG(1,("lookup_usergroups(dn=%s) asprintf failed!\n", user_dn));
542 SAFE_FREE(escaped_dn);
543 status = NT_STATUS_NO_MEMORY;
544 goto done;
545 }
546
547 SAFE_FREE(escaped_dn);
548
549 rc = ads_search_retry(ads, &res, ldap_exp, group_attrs);
550
551 if (!ADS_ERR_OK(rc) || !res) {
552 DEBUG(1,("lookup_usergroups ads_search member=%s: %s\n", user_dn, ads_errstr(rc)));
553 return ads_ntstatus(rc);
554 }
555
556 count = ads_count_replies(ads, res);
557
558 *user_sids = NULL;
559 num_groups = 0;
560
561 /* always add the primary group to the sid array */
562 if (!add_sid_to_array(mem_ctx, primary_group, user_sids, &num_groups)) {
563 status = NT_STATUS_NO_MEMORY;
564 goto done;
565 }
566
567 if (count > 0) {
568 for (msg = ads_first_entry(ads, res); msg;
569 msg = ads_next_entry(ads, msg)) {
570 DOM_SID group_sid;
571
572 if (!ads_pull_sid(ads, msg, "objectSid", &group_sid)) {
573 DEBUG(1,("No sid for this group ?!?\n"));
574 continue;
575 }
576
577 /* ignore Builtin groups from ADS - Guenther */
578 if (sid_check_is_in_builtin(&group_sid)) {
579 continue;
580 }
581
582 if (!add_sid_to_array(mem_ctx, &group_sid, user_sids,
583 &num_groups)) {
584 status = NT_STATUS_NO_MEMORY;
585 goto done;
586 }
587 }
588
589 }
590
591 *p_num_groups = num_groups;
592 status = (user_sids != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
593
594 DEBUG(3,("ads lookup_usergroups (member) succeeded for dn=%s\n", user_dn));
595done:
596 if (res)
597 ads_msgfree(ads, res);
598
599 return status;
600}
601
602/* Lookup groups a user is a member of - alternate method, for when
603 tokenGroups are not available. */
604static NTSTATUS lookup_usergroups_memberof(struct winbindd_domain *domain,
605 TALLOC_CTX *mem_ctx,
606 const char *user_dn,
607 DOM_SID *primary_group,
608 size_t *p_num_groups, DOM_SID **user_sids)
609{
610 ADS_STATUS rc;
611 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
612 int count;
613 LDAPMessage *res = NULL;
614 ADS_STRUCT *ads;
615 const char *attrs[] = {"memberOf", NULL};
616 size_t num_groups = 0;
617 DOM_SID *group_sids = NULL;
618 int i;
619
620 DEBUG(3,("ads: lookup_usergroups_memberof\n"));
621
622 ads = ads_cached_connection(domain);
623
624 if (!ads) {
625 domain->last_status = NT_STATUS_SERVER_DISABLED;
626 goto done;
627 }
628
629 rc = ads_search_retry_extended_dn(ads, &res, user_dn, attrs,
630 ADS_EXTENDED_DN_HEX_STRING);
631
632 if (!ADS_ERR_OK(rc) || !res) {
633 DEBUG(1,("lookup_usergroups_memberof ads_search member=%s: %s\n",
634 user_dn, ads_errstr(rc)));
635 return ads_ntstatus(rc);
636 }
637
638 count = ads_count_replies(ads, res);
639
640 if (count == 0) {
641 status = NT_STATUS_NO_SUCH_USER;
642 goto done;
643 }
644
645 *user_sids = NULL;
646 num_groups = 0;
647
648 /* always add the primary group to the sid array */
649 if (!add_sid_to_array(mem_ctx, primary_group, user_sids, &num_groups)) {
650 status = NT_STATUS_NO_MEMORY;
651 goto done;
652 }
653
654 count = ads_pull_sids_from_extendeddn(ads, mem_ctx, res, "memberOf",
655 ADS_EXTENDED_DN_HEX_STRING,
656 &group_sids);
657 if (count == 0) {
658 DEBUG(1,("No memberOf for this user?!?\n"));
659 status = NT_STATUS_NO_MEMORY;
660 goto done;
661 }
662
663 for (i=0; i<count; i++) {
664
665 /* ignore Builtin groups from ADS - Guenther */
666 if (sid_check_is_in_builtin(&group_sids[i])) {
667 continue;
668 }
669
670 if (!add_sid_to_array(mem_ctx, &group_sids[i], user_sids,
671 &num_groups)) {
672 status = NT_STATUS_NO_MEMORY;
673 goto done;
674 }
675
676 }
677
678 *p_num_groups = num_groups;
679 status = (*user_sids != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
680
681 DEBUG(3,("ads lookup_usergroups (memberof) succeeded for dn=%s\n", user_dn));
682done:
683 TALLOC_FREE(group_sids);
684 if (res)
685 ads_msgfree(ads, res);
686
687 return status;
688}
689
690
691/* Lookup groups a user is a member of. */
692static NTSTATUS lookup_usergroups(struct winbindd_domain *domain,
693 TALLOC_CTX *mem_ctx,
694 const DOM_SID *sid,
695 uint32 *p_num_groups, DOM_SID **user_sids)
696{
697 ADS_STRUCT *ads = NULL;
698 const char *attrs[] = {"tokenGroups", "primaryGroupID", NULL};
699 ADS_STATUS rc;
700 int count;
701 LDAPMessage *msg = NULL;
702 char *user_dn = NULL;
703 DOM_SID *sids;
704 int i;
705 DOM_SID primary_group;
706 uint32 primary_group_rid;
707 fstring sid_string;
708 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
709 size_t num_groups = 0;
710
711 DEBUG(3,("ads: lookup_usergroups\n"));
712 *p_num_groups = 0;
713
714 status = lookup_usergroups_cached(domain, mem_ctx, sid,
715 p_num_groups, user_sids);
716 if (NT_STATUS_IS_OK(status)) {
717 return NT_STATUS_OK;
718 }
719
720 ads = ads_cached_connection(domain);
721
722 if (!ads) {
723 domain->last_status = NT_STATUS_SERVER_DISABLED;
724 status = NT_STATUS_SERVER_DISABLED;
725 goto done;
726 }
727
728 rc = ads_search_retry_sid(ads, &msg, sid, attrs);
729
730 if (!ADS_ERR_OK(rc)) {
731 status = ads_ntstatus(rc);
732 DEBUG(1,("lookup_usergroups(sid=%s) ads_search tokenGroups: %s\n",
733 sid_to_string(sid_string, sid), ads_errstr(rc)));
734 goto done;
735 }
736
737 count = ads_count_replies(ads, msg);
738 if (count != 1) {
739 status = NT_STATUS_UNSUCCESSFUL;
740 DEBUG(1,("lookup_usergroups(sid=%s) ads_search tokenGroups: "
741 "invalid number of results (count=%d)\n",
742 sid_to_string(sid_string, sid), count));
743 goto done;
744 }
745
746 if (!msg) {
747 DEBUG(1,("lookup_usergroups(sid=%s) ads_search tokenGroups: NULL msg\n",
748 sid_to_string(sid_string, sid)));
749 status = NT_STATUS_UNSUCCESSFUL;
750 goto done;
751 }
752
753 user_dn = ads_get_dn(ads, msg);
754 if (user_dn == NULL) {
755 status = NT_STATUS_NO_MEMORY;
756 goto done;
757 }
758
759 if (!ads_pull_uint32(ads, msg, "primaryGroupID", &primary_group_rid)) {
760 DEBUG(1,("%s: No primary group for sid=%s !?\n",
761 domain->name, sid_to_string(sid_string, sid)));
762 goto done;
763 }
764
765 sid_copy(&primary_group, &domain->sid);
766 sid_append_rid(&primary_group, primary_group_rid);
767
768 count = ads_pull_sids(ads, mem_ctx, msg, "tokenGroups", &sids);
769
770 /* there must always be at least one group in the token,
771 unless we are talking to a buggy Win2k server */
772
773 /* actually this only happens when the machine account has no read
774 * permissions on the tokenGroup attribute - gd */
775
776 if (count == 0) {
777
778 /* no tokenGroups */
779
780 /* lookup what groups this user is a member of by DN search on
781 * "memberOf" */
782
783 status = lookup_usergroups_memberof(domain, mem_ctx, user_dn,
784 &primary_group,
785 &num_groups, user_sids);
786 *p_num_groups = (uint32)num_groups;
787 if (NT_STATUS_IS_OK(status)) {
788 goto done;
789 }
790
791 /* lookup what groups this user is a member of by DN search on
792 * "member" */
793
794 status = lookup_usergroups_member(domain, mem_ctx, user_dn,
795 &primary_group,
796 &num_groups, user_sids);
797 *p_num_groups = (uint32)num_groups;
798 goto done;
799 }
800
801 *user_sids = NULL;
802 num_groups = 0;
803
804 if (!add_sid_to_array(mem_ctx, &primary_group, user_sids, &num_groups)) {
805 status = NT_STATUS_NO_MEMORY;
806 goto done;
807 }
808
809 for (i=0;i<count;i++) {
810
811 /* ignore Builtin groups from ADS - Guenther */
812 if (sid_check_is_in_builtin(&sids[i])) {
813 continue;
814 }
815
816 if (!add_sid_to_array_unique(mem_ctx, &sids[i],
817 user_sids, &num_groups)) {
818 status = NT_STATUS_NO_MEMORY;
819 goto done;
820 }
821 }
822
823 *p_num_groups = (uint32)num_groups;
824 status = (*user_sids != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
825
826 DEBUG(3,("ads lookup_usergroups (tokenGroups) succeeded for sid=%s\n",
827 sid_to_string(sid_string, sid)));
828done:
829 ads_memfree(ads, user_dn);
830 ads_msgfree(ads, msg);
831 return status;
832}
833
834/*
835 find the members of a group, given a group rid and domain
836 */
837static NTSTATUS lookup_groupmem(struct winbindd_domain *domain,
838 TALLOC_CTX *mem_ctx,
839 const DOM_SID *group_sid, uint32 *num_names,
840 DOM_SID **sid_mem, char ***names,
841 uint32 **name_types)
842{
843 ADS_STATUS rc;
844 int count;
845 LDAPMessage *res=NULL;
846 ADS_STRUCT *ads = NULL;
847 char *ldap_exp;
848 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
849 char *sidstr;
850 char **members;
851 int i;
852 size_t num_members;
853 fstring sid_string;
854 BOOL more_values;
855 const char **attrs;
856 uint32 first_usn;
857 uint32 current_usn;
858 int num_retries = 0;
859
860 DEBUG(10,("ads: lookup_groupmem %s sid=%s\n", domain->name,
861 sid_string_static(group_sid)));
862
863 *num_names = 0;
864
865 ads = ads_cached_connection(domain);
866
867 if (!ads) {
868 domain->last_status = NT_STATUS_SERVER_DISABLED;
869 goto done;
870 }
871
872 if ((sidstr = sid_binstring(group_sid)) == NULL) {
873 status = NT_STATUS_NO_MEMORY;
874 goto done;
875 }
876
877 /* search for all members of the group */
878 if (!(ldap_exp = talloc_asprintf(mem_ctx, "(objectSid=%s)",sidstr))) {
879 SAFE_FREE(sidstr);
880 DEBUG(1, ("ads: lookup_groupmem: tallloc_asprintf for ldap_exp failed!\n"));
881 status = NT_STATUS_NO_MEMORY;
882 goto done;
883 }
884 SAFE_FREE(sidstr);
885
886 members = NULL;
887 num_members = 0;
888
889 if ((attrs = TALLOC_ARRAY(mem_ctx, const char *, 3)) == NULL) {
890 status = NT_STATUS_NO_MEMORY;
891 goto done;
892 }
893
894 attrs[1] = talloc_strdup(mem_ctx, "usnChanged");
895 attrs[2] = NULL;
896
897 do {
898 if (num_members == 0)
899 attrs[0] = talloc_strdup(mem_ctx, "member");
900
901 DEBUG(10, ("Searching for attrs[0] = %s, attrs[1] = %s\n", attrs[0], attrs[1]));
902
903 rc = ads_search_retry(ads, &res, ldap_exp, attrs);
904
905 if (!ADS_ERR_OK(rc) || !res) {
906 DEBUG(1,("ads: lookup_groupmem ads_search: %s\n",
907 ads_errstr(rc)));
908 status = ads_ntstatus(rc);
909 goto done;
910 }
911
912 count = ads_count_replies(ads, res);
913 if (count == 0)
914 break;
915
916 if (num_members == 0) {
917 if (!ads_pull_uint32(ads, res, "usnChanged", &first_usn)) {
918 DEBUG(1, ("ads: lookup_groupmem could not pull usnChanged!\n"));
919 goto done;
920 }
921 }
922
923 if (!ads_pull_uint32(ads, res, "usnChanged", &current_usn)) {
924 DEBUG(1, ("ads: lookup_groupmem could not pull usnChanged!\n"));
925 goto done;
926 }
927
928 if (first_usn != current_usn) {
929 DEBUG(5, ("ads: lookup_groupmem USN on this record changed"
930 " - restarting search\n"));
931 if (num_retries < 5) {
932 num_retries++;
933 num_members = 0;
934 ads_msgfree(ads, res);
935 res = NULL;
936 continue;
937 } else {
938 DEBUG(5, ("ads: lookup_groupmem USN on this record changed"
939 " - restarted search too many times, aborting!\n"));
940 status = NT_STATUS_UNSUCCESSFUL;
941 goto done;
942 }
943 }
944
945 members = ads_pull_strings_range(ads, mem_ctx, res,
946 "member",
947 members,
948 &attrs[0],
949 &num_members,
950 &more_values);
951
952 ads_msgfree(ads, res);
953 res = NULL;
954
955 if ((members == NULL) || (num_members == 0))
956 break;
957
958 } while (more_values);
959
960 /* now we need to turn a list of members into rids, names and name types
961 the problem is that the members are in the form of distinguised names
962 */
963
964 if (num_members) {
965 (*sid_mem) = TALLOC_ZERO_ARRAY(mem_ctx, DOM_SID, num_members);
966 (*name_types) = TALLOC_ZERO_ARRAY(mem_ctx, uint32, num_members);
967 (*names) = TALLOC_ZERO_ARRAY(mem_ctx, char *, num_members);
968
969 if ((members == NULL) || (*sid_mem == NULL) ||
970 (*name_types == NULL) || (*names == NULL)) {
971 DEBUG(1, ("talloc failed\n"));
972 status = NT_STATUS_NO_MEMORY;
973 goto done;
974 }
975 } else {
976 (*sid_mem) = NULL;
977 (*name_types) = NULL;
978 (*names) = NULL;
979 }
980
981 for (i=0;i<num_members;i++) {
982 uint32 name_type;
983 char *name;
984 DOM_SID sid;
985
986 if (dn_lookup(ads, mem_ctx, members[i], &name, &name_type, &sid)) {
987 (*names)[*num_names] = name;
988 (*name_types)[*num_names] = name_type;
989 sid_copy(&(*sid_mem)[*num_names], &sid);
990 (*num_names)++;
991 }
992 }
993
994 status = NT_STATUS_OK;
995 DEBUG(3,("ads lookup_groupmem for sid=%s\n", sid_to_string(sid_string, group_sid)));
996done:
997
998 if (res)
999 ads_msgfree(ads, res);
1000
1001 return status;
1002}
1003
1004/* find the sequence number for a domain */
1005static NTSTATUS sequence_number(struct winbindd_domain *domain, uint32 *seq)
1006{
1007 ADS_STRUCT *ads = NULL;
1008 ADS_STATUS rc;
1009
1010 DEBUG(3,("ads: fetch sequence_number for %s\n", domain->name));
1011
1012 *seq = DOM_SEQUENCE_NONE;
1013
1014 ads = ads_cached_connection(domain);
1015
1016 if (!ads) {
1017 domain->last_status = NT_STATUS_SERVER_DISABLED;
1018 return NT_STATUS_UNSUCCESSFUL;
1019 }
1020
1021 rc = ads_USN(ads, seq);
1022
1023 if (!ADS_ERR_OK(rc)) {
1024
1025 /* its a dead connection, destroy it */
1026
1027 if (domain->private_data) {
1028 ads = (ADS_STRUCT *)domain->private_data;
1029 ads->is_mine = True;
1030 ads_destroy(&ads);
1031 ads_kdestroy("MEMORY:winbind_ccache");
1032 domain->private_data = NULL;
1033 }
1034 }
1035 return ads_ntstatus(rc);
1036}
1037
1038/* get a list of trusted domains */
1039static NTSTATUS trusted_domains(struct winbindd_domain *domain,
1040 TALLOC_CTX *mem_ctx,
1041 uint32 *num_domains,
1042 char ***names,
1043 char ***alt_names,
1044 DOM_SID **dom_sids)
1045{
1046 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1047 struct ds_domain_trust *domains = NULL;
1048 int count = 0;
1049 int i;
1050 uint32 flags = DS_DOMAIN_IN_FOREST | DS_DOMAIN_DIRECT_OUTBOUND;
1051 struct rpc_pipe_client *cli;
1052
1053 DEBUG(3,("ads: trusted_domains\n"));
1054
1055 *num_domains = 0;
1056 *alt_names = NULL;
1057 *names = NULL;
1058 *dom_sids = NULL;
1059
1060 result = cm_connect_netlogon(domain, &cli);
1061
1062 if (!NT_STATUS_IS_OK(result)) {
1063 DEBUG(5, ("trusted_domains: Could not open a connection to %s "
1064 "for PIPE_NETLOGON (%s)\n",
1065 domain->name, nt_errstr(result)));
1066 return NT_STATUS_UNSUCCESSFUL;
1067 }
1068
1069 if ( NT_STATUS_IS_OK(result) ) {
1070 result = rpccli_ds_enum_domain_trusts(cli, mem_ctx,
1071 cli->cli->desthost,
1072 flags, &domains,
1073 (unsigned int *)&count);
1074 }
1075
1076 if ( NT_STATUS_IS_OK(result) && count) {
1077
1078 /* Allocate memory for trusted domain names and sids */
1079
1080 if ( !(*names = TALLOC_ARRAY(mem_ctx, char *, count)) ) {
1081 DEBUG(0, ("trusted_domains: out of memory\n"));
1082 return NT_STATUS_NO_MEMORY;
1083 }
1084
1085 if ( !(*alt_names = TALLOC_ARRAY(mem_ctx, char *, count)) ) {
1086 DEBUG(0, ("trusted_domains: out of memory\n"));
1087 return NT_STATUS_NO_MEMORY;
1088 }
1089
1090 if ( !(*dom_sids = TALLOC_ARRAY(mem_ctx, DOM_SID, count)) ) {
1091 DEBUG(0, ("trusted_domains: out of memory\n"));
1092 return NT_STATUS_NO_MEMORY;
1093 }
1094
1095 /* Copy across names and sids */
1096
1097 for (i = 0; i < count; i++) {
1098 (*names)[i] = domains[i].netbios_domain;
1099 (*alt_names)[i] = domains[i].dns_domain;
1100
1101 sid_copy(&(*dom_sids)[i], &domains[i].sid);
1102 }
1103
1104 *num_domains = count;
1105 }
1106
1107 return result;
1108}
1109
1110/* the ADS backend methods are exposed via this structure */
1111struct winbindd_methods ads_methods = {
1112 True,
1113 query_user_list,
1114 enum_dom_groups,
1115 enum_local_groups,
1116 msrpc_name_to_sid,
1117 msrpc_sid_to_name,
1118 msrpc_rids_to_names,
1119 query_user,
1120 lookup_usergroups,
1121 msrpc_lookup_useraliases,
1122 lookup_groupmem,
1123 sequence_number,
1124 msrpc_lockout_policy,
1125 msrpc_password_policy,
1126 trusted_domains,
1127};
1128
1129#endif
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